A malware type that replicates itself in the system

 Virus:

 A malware  type that replicates itself in the system.
 
Worm:

A type of  malware whose purpose is to spread throughout a network and infect endpoints connected to that network in order to carry out some future malicious action. A worm can be integrated as a component of various types of malware.

Rootkit:

 A type of  malware that is found in lower levels of the operating system that tend to be highly privileged. Many times, its purpose is to hide other malicious files

Downloader:

A type of  malware whose function is to download and run from the internet some other malicious file whose purpose is to harm the user.

Ransomware:

A type of  malware whose purpose is to encrypt the endpoint and demand financial ransom from the user before they can access their files.

Botnet:

Botnet  malware causes the user to be a small part of a large network of infected computers. Botnet victims receive the same commands simultaneously from the attacker's server and may even be part of some future attack.

Backdoor:

A type of  malware whose purpose is – as the name suggests – to leave open a "back door", providing the attacker with ongoing access to the user's endpoint.

PUP:

 An  acronym that stands for potentially unwanted program, a name that includes malware whose purpose  is to present undesirable content to the user, for instance, ads.

Dropper:

A type of  malware whose purpose is to "drop" a component of itself into the hard drive.

Scareware:

A type of  malware that presents false data about the endpoint it is installed on, so as to frighten the user into performing actions that could be malicious, such as installing fake antivirus software or even paying money for it.

Trojan:

A type  of malware that performs as if it were a legitimate, innocent application within the operating system (for example, antivirus, free games, or Windows/Office activation) and contains malicious functionality.

Spyware:

A type of  malware whose purpose is to spy on the user and steal their information to sell it for financial gain.Important NoteMalware variants and famili
es are classified based not only on the main purpose or goal